Success. iOpener doesn't get the phone nearly hot enough. Multiple rounds of hair dryer + isopropyl alcohol dribbled in b/w case and screen while pulling up on suction cup. For me, the bottom left hand corner (volume rocker side) seemed to lift up first, so I moved the suction cup to that corner while doing the heat + alcohol.

I don't doubt that you folks eventually got this open, but how on earth do you not lose your mind with the suction cup popping off every 5 seconds? Agree with Ryan above, have replaced batteries on several other iPhone generations with nowhere near this much effort. Still working on it going on 1 hr, about 10 rounds of hair dryer heat. Did Apple use a stronger adhesive for the 12?